Astrometry with reconstructed hubble space telescope planetary camera (WF/PC 1) images

摘要

AbstractThe effect of image reconstruction on the astrometric precision of the Hubble Space Telescope Planetary Camera (WF/PC 1) has been investigated. Depending on the crowded nature and exposure of the stellar images, the reconstruction process may provide benefits for the image centering, especially in terms of the number of stars which can be detected. Unfortunately, there is also evidence that the positions derived from reconstructed images are biased toward the center of individual pixels, an astrometrically unacceptable condition.